wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 22 people, some anonymous, worked to edit and improve it over time. This article has also been viewed 159,747 times.
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Number Sense or mental math is the skill of using applied algebra, mathematics technique, brain power and invention to solve math problems. Full details of some of these techniques are described in links to other wikiHow articles.

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wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 22 people, some anonymous, worked to edit and improve it over time. This article has also been viewed 159,747 times.